本文报道了１９９２—１９９４年连续３年采自海南至辽宁（包括台湾）沿海７个代表性河口地区鳗苗群体的主要形态特征比较研究结果。４项计数性状和３项度量性状，差异系数分析结果未达到亚种差异水平；判别函数显示，大多数群体间存在显著差异，这种差异应源于遗传变异。各年差异变化无规律，可能与鳗苗漂游分布的随机性有关。 This paper reports the results of comparative studies on the main morphological characteristics of the eel fry populations collected from 1992 to 1994 in the seven representative estuarine coastal areas from Hainan to Liaoning (including Taiwan) for three consecutive years. 4 counting traits and 3 measuring traits. The result of difference coefficient analysis did not reach the level of subspecies differentiation. The discriminant function showed that there were significant differences among most groups, which should be due to genetic variation. Irregular changes in different years, may be related to the random distribution of eel frog swimming.